<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录页</title>
</head>
<body>
    
<div class="container">

    <div class="form-signin">
        <h2 class="form-signin-heading">登录页</h2>
        <label for="user" class="sr-only">账号</label>
        <input type="text" id="user" class="form-control" placeholder="请输入账号..." required autofocus>
        <label for="pass" class="sr-only">密码</label>
        <input type="password" id="pass" class="form-control" placeholder="请输入密码..." required>
        <button class="btn btn-lg btn-default btn-block" type="submit">登录</button>
    </div>

    </div> <!-- /container -->

</body>
</html>